Congratulations! This is a great example of how this community helps each other, you researched and made your choice and it turned out excellent. What car did you put these on and did it result in any kind of height adjustment? Do you feel any of the strange sensations that people report regarding the FSD's?
Regarding the KONI technology, I too wondered the same thing if it is really that much better, why isn't everyone using it at least on their luxury/sport models. Maybe it is Koni's patent position, but why don't the oem's use Konis, maybe cost? All that said, I did read somewhere that Mercedes must use a similar technology because some of their cars exhibit the same type of character as the FSD's.